Get the Apple Watch 2 and look on the EFIS screen in the plane.
I have an Apple Watch 2 and for what I use it for it works great. Phone calls, text messages, calendar, altimeter and the car navigation works really good on the Apple Watch 2. I find that I only need to charge it every two days and I actually use it more than I thought I would. Last week I flew commercial to Birmingham and it was really nice to have the flight and gate information on the watch when we changed planes, Expedia Watch Ap. I also find that Apple Pay is really convenient using the watch.
Rob Hickman
N402RH RV-10